CanadaAverage weather for Ontario in October
It's cool to moderate in October in Ontario with an average temperature of 16°C. Temperatures this month range from a low of 10°C to a high of 19°C. At night, you can expect temperatures between 5°C and 14°C.
Start of October
The month of October starts in Ontario with mild temps, averaging around 19°C during the day and nights around 12°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid October
By mid-October, daytime temps drop to around 16°C, with nights around 9°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of October
By the end of October, the average daytime temperature in Ontario is around 13°C, while nighttime temps are about 7°C. A shower might pop up, but overall, the weather will be dry and sunny.
In October, there is an average of 69 mm of precipitation, spread over 10 days. Of the total precipitation, about 0,1 cm falls as snow in October. The wind speed is around 4 Bft, mostly coming from the South.
Ontario in October |
New York | ||
|---|---|---|---|
 Average temperature |
16°C | 21°C | |
 Max. temperature |
19°C | 26°C | |
| Min. temperature |
10°C | -5°C | |
 Total precipitation |
69 mm | 119 mm | |
| Rainy days |
10 days | 13 days | |
 Total snowfall |
0,1 cm | 0 cm | |
| Snowy days |
1 day | 0 days | |
September
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is October a good time to visit Ontario?
Looking for sun and warm weather? October isn’t a good month to be in Ontario. The temperatures are too low for a warm stay this month.
Temperature records
With 29°C in 2019, Ontario reached the highest temperature in October over the past 10 years. The lowest daytime temperature in this month was 3°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 20°C.
Check out the climate of Ontario for all months and discover the best travel time
Curious about the weather in other parts of Canada? Check out the climate and weather for spots like Vancouver, Toronto, Niagara Falls, or explore other destinations in Canada.
Daily Temperature in October in Ontario
This chart shows the average daily high and low temperatures in October for Ontario, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in October in Ontario
The chart below shows the average daily precipitation in October for Ontario, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for October, you can expect about 10 days of precipitation in Ontario.
Daily Snowfall in October in Ontario
This chart shows the average daily snowfall in October in Ontario, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in October.
Daily UV index in October in Ontario
This chart shows the average daily UV index in October in Ontario, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in October in Ontario over the years
This chart shows the average temperature in October in Ontario, measured in degrees Celsius, over the past few years.
Total precipitation in October in Ontario over the years
This chart shows the average precipitation in October in Ontario, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in October in Ontario per year
This chart shows the average snowfall in October in Ontario, measured in centimeters, over the past few years.
Daily weather in October for Ontario
Click on any day in October to get detailed info about the usual weather on that day in Ontario. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in October in Ontario
Have you been to Ontario in October?
Share your weather experience in October in Ontario.
Average weather in Ontario by month
Click on a month below to see detailed weather info for Ontario. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
